1: You can give their energy levels a real boost by feeding them marmite on toast (or bread). Marmite is packed full of B-Vitamins and is good for chickens and humans alike. A slice on the first day for your two hens will keep the vet away. You can keep feeding them this as a routine, about once a week.
i may just give this a try as i now have 2 sick girls with bubbly eyes an sneezing cant have all of them ill again .